I thought this was cute
taken from Carl Sagan's Billions and Billions.
Golden Rule: Do unto others as you would have them do unto you.
Silver Rule: Do not do unto others what you would not have them do unto you.
Brass Rule: Do unto others as they do unto you.
Iron Rule: Do unto others as you like, before they do it unto you.
Tin Rule: Suck up to those above you, and abuse those below.
Nepotism Rule: Give precedence in all things to close relatives, and do as you like to others.
Tit-for-tat rule: Cooperate with others first, then do unto them as they do unto you.
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